我有一个活动,可以在点击按钮时从网上下载文件。文件的下载是通过内部AsyncTask完成的。下载工作,我甚至可以使用AsyncTask在Activitys layout.xml中显示,更新和隐藏进度条小部件。我还可以显示来自此AsyncTask的通知。但是,我不能从AsyncTask更新通知中的进度条。处理完第一个更新后,我会立即关闭Force。如果需要,我会提供我的代码!
感谢您的时间
InvocationTargetException.<init>(Throwable) line: 50
Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method]
Method.invoke(Object, Object...) line: 507
ZygoteInit$MethodAndArgsCaller.run() line: 845
ZygoteInit.main(String[]) line: 603
NativeStart.main(String[]) line: not available [native method]
这是抛到这一行
myContentView.setProgressBar(R.id.status_progress, 100, Integer.parseInt(progress[0]), false);
这是我的代码
protected String doInBackground(String... aurl) {
int count;
try {
URL url = new URL(aurl[0]);
String path = url.getPath();
String filename = new File(path).getName();
Environment.getExternalStorageDirectory();
File tm = new File("/sdcard/Transform Mii/");
tm.mkdirs();
File out = new File(tm, filename);
URLConnection conexion = url.openConnection();
conexion.connect();
int lenghtOfFile = conexion.getContentLength();
Log.d("ANDRO_ASYNC", "Lenght of file: " + lenghtOfFile);
InputStream input = new BufferedInputStream(url.openStream());
OutputStream output = new FileOutputStream(out);
byte data[] = new byte[1024];
long total = 0;
while ((count = input.read(data)) != -1) {
total += count;
publishProgress(""+(int)((total*100)/lenghtOfFile));
output.write(data, 0, count);
}
output.flush();
output.close();
input.close();
} catch (Exception e) {}
return null;
}
protected void onProgressUpdate(String... progress) {
progressbar.setProgress(Integer.parseInt(progress[0]));
myContentView.setProgressBar(R.id.status_progress, 100, Integer.parseInt(progress[0]), false);
notificationManager.notify(NOTIF_ID, notification);
}
progressbar是活动的layout.xml中的栏,通常会更新
myContentView进度条是通知中的栏